Tiles（瓷砖)can be fixed to any surface as long as it’s ______ , firm and dry.AsquareBp

Any electric motor can be constructed to be_____.A.short proofB.ground proofC.explosion pr

The output volume of a positive fixed displacement pump can be changed only by _____.A.cha

In English many nouns can be turned into verbs without any change to their form. For insta

Any academic breakthrough, ______, does not automatically ensure that it can be applied to

According to the passage,A．the distance between people can be fixed.B．the distance kept be

A liquid is similar to a gas because has molecules are not fixed to each other in any spec